SharpTank Classroom Ceiling Hooks (4 Pack) - High Strength Aluminum Ceiling Track Bar-Clamp Fastener Designed for Drop-Ceiling T-Bars - Holds up to 15 lbs

I do not like this item only because I am unable to use them. The ceiling track bar that I have in my classroom does not fit the size of these ceiling hooks. And it costs more to return than the product itself, so now they're just sitting in a drawer collecting dust.

These fit nicely on drop ceilings to hangs things from. These are pretty heft and are holding a vintage 1950s glass pendant light in my office.

hung lights with this, works great